package com.nchu.learn.netty.demo;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

import java.net.InetSocketAddress;

/**
 * @author fujianjian
 * @project self-learn
 * @date 2018/3/8 20:38
 */
public class DemoClient {
    private String host;
    private Integer port;

    public DemoClient(String host, Integer port) {
        this.host = host;
        this.port = port;
    }
    public void start() throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        try{
            Bootstrap b = new Bootstrap();
            b.group(group)
                    .channel(NioSocketChannel.class)
                    .remoteAddress(new InetSocketAddress(host,port))
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch)
                                throws Exception {
                            ch.pipeline().addLast(new DemoClientHandler());
                        }
                    });
            ChannelFuture f = b.connect().sync();

            f.channel().closeFuture().sync();
        }finally {
            group.shutdownGracefully().sync();
        }
    }

    public static void main(String[] args) throws Exception {
        if(args.length != 2){
            System.err.println(
                    "Usage :" + DemoClient.class.getSimpleName()+
                            "<host><port>"
            );
            return;
        }

        final String host = args[0];
        final int port = Integer.parseInt(args[1]);

        new DemoClient(host,port).start();
    }


}
